The bill in this case is filed by the complainants, Laura C. Huntington and the Huntington Dry Pulverizer Company (who are, respectively, the owners by assignment of certain letters patent of the United States, No. 277,134, dated May 8, 1883, granted to Frank A. Huntington, and the possessor of the sole and exclusive right and privilege of making, using, and selling for use, dry crushing mills, embodying the invention or improvements set forth and claimed in said letters patent), against the Whittaker Cement Company and others, charging infringement of said patent by the use of a machine known as the “G-rMin Mill,” manufactured by the Bradley Fertilizer Company, used for similar purposes, and which, it is charged, embodies the principle of operation and the combinations described in said letters patent. The defendants, by the answer, set up prior publication and invention, and deny infringement. The complainants’ patent relates to a crushing mill which is more especially intended for the crushing of quartz and pulverizing metal-bearing rocks. It consists of a pan having an interior circular die around its periphery, and, in combination with this, a series of rollers which roll against this die, being suspended by vertical shafts turning in sleeves which have horizontal journals above, so that the rollers may swing radially. Its novelty consists, as set out in claim 1, of “the pan, A, having the interior vertical circular die, F, in combination with the rollers, G-, shafts, I, and means for suspending said shafts from above, so that said rollers may rotate against the die by centrifugal force, substantially as herein described.”
Apparatus, appliances for crushing and pulverizing ores were known to the art at the time Huntington obtained his patent, as was also the mighty power of centrifugal force. Machines had been constructed to utilize this force for such purpose, but in every case the balls or rollers or crushers had rested upon the floor of the pan, so that, when rotated at high speed, the constant rubbing between the rollers and the pan, and between the crushers and the driving arm, induced excessive wear and tear, and resulted in the rapid and continual destruction of the parts. Various means had been used in the attempt ^ to overcome these serious objections. In the Pickering and St. John patent, No. 71,055, the weights had been made round; and in the Lucop patent, No. 173,411, the round weights were made to rotate upon their own axes; while in the Howland patent, No. 263,497, the floor of the pan rotated, and, in consequence, there was present, not only abrasive friction of the rolls upon the floor, but also against each other and the vertical part of the die. In all of these inventions there was present the circular annular die against which the rolls or crushers were pressed or rotated. An examination of the prior state *325of the art discloses the fact that, of the parts forming the Huntington combination, the circular pan with its interior vertical die was old, the rollers rotating upon their own axes were old, as were also the shafts (or their equivalents) for propelling the rollers around the pan; but in none of the previous devices had there been a suspension of the rollers so as to allow them to move radially to and from the center, and roíate against the die by centrifugal force. This, Huntington conceives and declares to be the important feature of his invention. By this appliance, the rollers, when rapidly rotated, “were thrown outwardly by centrifugal force, so as to crush anything between them and the die surrounding the inside of the pan,” and by this means was overcome fhe abrasive friction of the rolls against the bottom of the pan and the driving arms, besides the maximum reduction of the excessive wear and tear that had been previously home by these parts.
It is impossible to read the record in this case and not be convinced that the suspension of the rollers so as to allow them to swing to and rotate against the rim of the inside die was the gist of the Huntington invention. It was not material how the rollers should be suspended (“The vertical carrying shafts may be suspended in many ways,” the inventor says); nor what other movements the rollers had. The important feature was that, whatever peculiar manner of suspension was used, it should be such as would allow them to move to and from the center, and be free to rotaie against the die by centrifugal force. ’Phis was the application of a new principle to the art, to accomplish a result long sought, but until then never satisfactorily attained. Huntington did not devise a new way to do'an old thing, hut he made it possible to utilize a force long ]:nown, but practically of as little value for the purpose to which he applied it as if it did not exist. I am of the opinion that claim 1 of the patent is valid, and not anticipated by any of the prior devices which have been cited to the court as having been used in the prior art.
Having found the claim of the complainants’ patent to be valid, it will be necessary to consider its scope and meaning, and whether it is infringed by the device used by (lie defendants. The parts in combination in the complainants’ machine are (1) The pan, A, into which the ore or other material is placed, having the interior vertical die, E, against which it is to he crushed; (2) rollers, G, which are means used to effect the crushing; (3) shafts, I, by which the rollers are suspended and carried; (4) means for suspending the shafts from above, so that the said rollers may rotate against the die by centrifugal force. It will he noticed that claim 1 of the patent reads “rollers, Gt,” “shafts, I,” and means for suspending said shafts substantially as described. In the specification describing his invention, the patentee uses the following language:
“My invention consists of a pan having an interior circular die around its periphery, and in combination with this of a series of rollers which roll against the die, being suspended by vertical shafts, turning in sleeves, which have horizontal Journals above, so that the rollers may swing radially. The suspending mechanism is suspended upon a cross or frame which is driven by a central shaft, and the rollers are thus thrown outward against the die by centrifugal action.”
*326Reference is also made to the drawings for a more complete explanation of the invention. These show an embodiment of the inventor’s specifications, and on them a plurality of rollers and shafts appears.
It is contended on the part of the defendants that by the use of the plural, “rollers” and “shafts,” in the claim, and by the expression “series of rollers” in the specification, Huntington has so limited his invention that the machine used by the defendants which is constructed with a single roll suspended by a single shaft does not come within its scope. In this view I cannot concur. I have little doubt that Huntington was impressed with the idea that the embodiment of his patent, as shown in the drawing, possessed advantages superior to any other, and that for certain reasons two rollers were more desirable than a larger series or a less number; but I am unable to conclude that he intended to limit the application of the principle he evolved to any particular number of rollers. He says: “In the present case I have shown two rollers suspended from opposite arms of the frame;” but he does not thereby limit himself to two rollers. It may be properly inferred from his language that either a greater or less number would equally serve the purpose. “It will be manifest that the vertical shafts carrying the rollers may be suspended in various ways, so as to allow the rollers to move to and from the center, which is the important feature of my invention.” That is to say, my invention consists, not in the number of rollers or shafts, but in so suspending them, whether few or many, that they can be free to rotate against the periphery of the circular die, and, by centrifugal force, to crush against the die the ore or other hard substance intended to be pulverized. The combination of the patent was not, pan and rollers and shafts alone, but added thereto the means of suspending said shafts from above, so that the said rollers might -rotate against the die by centrifugal force. The suspension of the rollers so as to be free to swing to and from the center of the pan, and rotate against the die, was the novelty and the essence of the invention; and it was in this respect, as the defendants’ expert declares, that •the Huntington machine differed from the earlier mills of its class. This it was that gave the machine its undoubted excellence. In view of the prior state of the art, I find that the actual invention of the patentee was that, by a combination of the means set out in claim 1 of the patent, a machine was constructed which for the first time embodied this important principle of construction. Neither the “rollers” nór the “shafts” constituted the novelty of the invention, and in this respect they differed from the “springs, S, S,” set out in the McClain patent,'which was considered in the case of McClain v. Ortmayer, 141 U. S. 419, 12 Sup. Ct. 76. In the present case no function is assigned to the plurality of rollers. The use of the plural included the singular, if the singular could do the work marked out by the plural. While the rollers and shafts are mentioned in the plural, they are referred to in the claim by a “single” letter, so that as to them the claim is “fairly susceptible of two *327constructions. That one will be adopted which will preserve to thgpatentee his actual invention.”
The duty of the court is to so construe claims as, without doing violence to the language used, to give the patentee what he has actually invented. In other words, "to make the claim commensurate with the invention.” Ransom v. New York, 1 Fish. Pat. Cas. 252, Fed. Gas. No. 11,573. I am of fixe opinion that the claim of the patent under consideration should be liberally construed, under a fair application of the rule, “Ut res magis valeat quam pereat.” "In construing- a patent, it is first pertinent to ascertain what, in view of the prior state of the art, the inventor has actually accomplished; and, this having- been found, such construction should be given as will secure the actual invention to the patentee, so far as this can be done consistently with giving due effect to the language of the specifications and claim.” Van Marter v. Miller, 4 Ban. & A. 124, Fed. Cas. No. 16,863. After a careful consideration of claim 1 and the specifications of the patent No. 277,134, I fail to find any intention on the part of the patentee to impose upon himself any limitation as to the number of rollers or shafts to he used in his machine. It is the first embodiment of the important principle of suspension by the combination of devices described in the claim, and any subsequent combination of the same devices embodying the same principle to accomplish the same result must be regarded as an infringement.
What, then, is the machine used by the defendants which is the subject-matter of the complaint? It will be found upon examination to consist of a pan with an interior circular vertical die, a roll, a shaft, and the means to suspend said shaft and roll from above, so that the roll may rotate against the periphery of the die. These are the same elements that are in combination in claim 3 of the complainants’ patent, and they are so combined that, when put in operation in the defendants’ machine, they accomplish the same result in the same way as the complainants’ machine. True, different methods of applying means are employed to bring the elements into combined action; but, when each performs its proper function, it is found as a result that the roll rotates on its own axis against the periphery of the die of the inner circular pan, and, by centrifugal force, crushes the ore or oilier substance between it and said die. The machines of the complainants and defendants are but different embodiments of the same principle. In them the same forces are set in motion inversely. In the complainants’ machine, power is exerted, in the first instance, to rotate the rolls orbitally, when, being free to swing to and from the center, they are thrown out by centrifugal force against the die, and then take on an axial rotation, induced by friction; while, in the defendants’ machine, power is primarily applied to obtain axial rotation of the roll, which, being suspended so as to be free to swing from the center, is thrown against the periphery of the die, where it is held by centrifugal force, and where, by the friction of the roll against *328the die, it takes on an orbital rotation. Each force or element performs the same function, and, when all are acting in combination, produce the same result in the same way. The only difference is a reversal of the order of development of forces. “It has been authoritatively decided in this circuit,” says Judge Acheson in Société Anonyme Usine J. Cleret v. Rehfuss, 75 Fed. 657, “that a mere reversal of parts is not a material departure from a patented invention, and will not avoid infringement”; quoting Devlin v. Paynter, 12 C. C. A. 188, 64 Fed. 398. Upon the same principle, a mere reversal of the order .of movement of the same parts will constitute infringement. As was said in Westinghouse v. Boyden Power-Brake Co., 170 U. S. 568, 18 Sup. Ct. 707, “it makes no difference in what order the devices are set in motion; if, when working together, they each perform the same function to accomplish the same result.” The attention of the court has been called to various differences between the machines of complainants and defendants, but they are all of such character that I consider them mere differences of detail, necessitated by the changed embodiment of the principle of the patent. Much stress had been laid by the defendants upon the fact that the roll of their machine is suspended by an universal instead of trunnion joint, and that by reason of said joint the defendants’ roll is free to move in any direction. The patentee recognizes that “there may be various ways of suspending the roll.” In his embodiment of the principle of a suspended roll, he deemed it advisable to use a trunnion joint, but he does not in his claim limit himself thereto. Any suspension will meet the requirement of the claim of the patent which will permit the roll to swing to and from the center; and any such suspension for the same purpose will be an infringement of complainants’ patented device, if used in combination with the other elements of the claim. It will be useless to discuss the minor differences in the form and structure of the machine of the complainants and defendants. I have considered all of them to which my attention has been directed by the brief and argument of counsel. I am satisfied that the defendants’ machine incorporates in its structure and operation the substance of the invention as set out in claim 1 of the patent in suit, and is therefore an infringement thereon. The complainants are entitled to protection against those who, availing themselves of the discovery, seek to justify themselves by pointing to mere form in the mechanical devices used. The complainants are entitled to a decree as prayed for in their bill.